funnytommy689 funnytommy689

16-04-2021
Chemistry

contestada

An atom starts with 20 electrons and 20 protons; after a reaction, it has 18 electrons and 20 protons.

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Kayla4320 Kayla4320

16-04-2021

Answer:

(+20) + (-18) = +2

Explanation:

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